Nut-lock.



PATENTED'JUNE 27, 1905.

J. E. G. GBISBL.

NUT LOCK.

APBLIOA'I'ION FILED OUT. 6,1904.

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By fi @W/tomey UNITED STATES I Patented June 2' 1, 1905.

PATENT OFFICE.

NUT-LOCK- SPECIFICATION forming part of Letters Patent No. 793,432,dated June 27, 1905.

A lication fil d October 5, 1904. Serial No. 227,217.

To all whom it may concern:

Be it known that I, JOHN E. G. GEIsEL, a citizen of the United States,residing at Le highton, in the county of Carbon and State ofPennsylvania, have invented a certain new and useful Nut-Lock, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

This invention relates to nut-locks, the object of the invention beingto provide adevice for looking a nut upon a bolt, axle, spindle, orother externally-threaded member or object, so that relative rotationbetween the nut and the threaded member will be prevented under ordinaryconditions and still admit of the nut being removed whenever it becomesnecessary without mutilating, injuring, or impairing the efliciency ofthe locking device for subsequent use.

With the above and other objects in view, the nature of which will morefully appear as the description proceeds, the invention consists in thenovel construction and combination of parts hereinafter fully set forth,illustrated, and described.

In the accompanying drawings, Figure 1 is a plan view of the nut-lock asapplied to an ordinary bolt and nut. Fig. 2 is a sectional view of thesame. Fig. 3 is a plan view of a lock of slightly-modified form. Fig. 4is a section similar to Fig. 1, illustrating the adaptation of the lockto an axle-spindle and nut. Fig. 5 is a plan view showing a modifiedform of lock. Fig. 6 is an elevation of the bolt shown in Fig. 5. Fig. 7is a plan view showing another form of lock. Fig. 8 is a sectional viewof the same. Fig. 9 is a section similar to Fig. 8, illustrating aslight modification in the manner of mounting the lock. Fig. 10 is aplan view showing means for protecting the locking device. Fig. 11 is asectional view illustrating the same feature.

Like reference-numerals designate corresponding parts in the severalfigures of the drawings.

Referring to the drawings, 1 designates the threaded member, which mayconsist of an ordinary bolt, as shown in Fig. 1, or an axlespindle, asshown in Fig. 2, or any other substantially cylindrical andexternally-threaded object. The nut 2 may be of the usual form, open atboth ends, as shown in Fig. 1, or closed at one end, as shown in Fig. 4.

In carrying out the present invention the locking device 3 is attachedto the nut and adapted to be moved into and out of engagement with thebolt or an extension of the bolt for the purpose of' preventing relativerotation between the bolt and nut. Under the preferred embodiment of theinvention the locking device is composed of a single piece or length ofspring-wire, one end of which is connected directly to the nut, as shownin Fig.

.1, by being inserted through a hole extending obliquely through onecorner of the nut and having its extremity bent, headed, or clenched, asshown at 4. The part of the lock which passes through the nut forms apivot or journal upon which the lock is adapted to turn for a purposehereinafter explained. At the outer portion of such pivot or journal thewire is bent to form one or more spring-coils 5 for imparting therequisite elasticity to the remainder of the locking device, whichextends from the coils 5 outward across the face of the nut, as shown inFig. 1, the wire being bent to form substantially parallel arms 6 and 7,which are connected at the outer end of the locking device by arecurvature of the wire of which the locking device is formed. Ifdesired and in order to form an extra strong look, the extremity of thewire may be bent laterally, as shown at 8 in Fig. 3, and secured to theprimary arm 6, thus forming a complete loop or band or eye.

The threaded member is provided with a square shoulder to be engaged bythe arm or arms of the locking device, and such shoulder is preferablyformed by providing the threaded member with an end extension 9 smallerthan the member itself and having a plurality of fiat surfaces. Whilesuch extension is illustrated as of square form in cross-section, itwill be apparent that a triangular or polygonal shape may be giventhereto. loop comprised by the arms of the locking device is adapted toreceive the extension 9 in the manner shown in Fig. 1, thus preventingthe nut from turning on the threaded member. To release the lockingdevice, the latter The eye or is lifted, as shown by dotted lines inFig. 2, and swung to one side, as shown by dotted lines in Fig. 1, thisbeing permitted by the pivot or journal of the locking device and thepresence of the coils 5. It will also be noted that by the angular oroblique position of the pivot or journal the locking device swingsoutward or away from the surface of the nut as it is moved laterally,thus assisting in the disengagement of the lock. Instead of squaring theend of the threaded member the extremity thereof may be formed with anotch or kerf 10, as shown in Figs. 5 and 6, and the locking device mayhave a single arm 6 to extend diametrically across the nut and engagethe square shoulder formed by either wall of said notch or kerf. Theextension 9, instead of being an integral portion of the threadedmember, may consist of a plug 9, as shown in Figs. 4 and 6, eitherscrewed or driven into a socket in the end of the threaded member so asto turn therewith, and said plug may either have a squared end, as shownin Fig. 4:, or a notched end, as shown in Fig. 6, according to the formof locking device used.

Where a vehicle spindle-nutis employed as shown in Fig. 4, the plug 9projects beyond the end of the threaded member, and the outer wall ofthe nut is provided with a small hole through which the plug projectsfar enough to be engaged by the locking'device, the looking principlebeing the same as heretofore described. Instead of forming the lockingdevice of wire it may be in the form of a flat leaf-spring, as shown inFigs. 7 8, and 9, secured at one end by a screw or rivet which forms thepivot or journal and provided with an eye 11 to fit the shouldered endof the threaded member or the plug extension thereof, as the case maybe. While the pivot 12 is preferably set at an angle, as shown in Fig.8, to provide for outward-swinging action above explained, said pivotmay extend transversely through the nut, as shown in Fig. 9, in whichlatter case the pivot is made longer, and a spring 13 is interposedbetween the head of the pivot and the nut to more readily admit of thelifting of the locking device, as indicated by the dotted lines in Fig.9, and to assist in holding the locking device in engagement with thethreaded member.

Changes in the form, proportion, and minor details of construction maybe resorted to without departing from the principle or sacrificing anyof the advantages of the invention.

In some instances it may be desirable to protect the locking device fromaccidental displacement. This may be accomplished as shown in Figs. and11, in which the nut is shown provided with a guard in the form of amarginal flange 14:, withinwhich the locking device 6 lies, which flangeprevents objects from comingin contact with the locking device andmoving it out of engagement with the threaded member. The flange may beprovided with one or more notches 15 to receive and retain the arm orarms of the locking device and assist in maintaining the engagementbetween the nut and the threaded member.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is

1. In a nut-lock, a threaded member provided with a square terminalshoulder, a nut, and a locking device carried by the nut and comprisinga journal portion set at an oblique angle,and an arm which engages saidshoulder.

2. In a nut-lock, a threaded member provided with a square terminalshoulder, a nut, and a locking device carried by the nut and comprisinga journal portion set. at an oblique angle, an arm projecting therefromand engaging said shoulder, and spring-coils at the inner end of saidarm.

3. In a nut-lock, a threaded member provided with a squared extension, anut, and a locking device carried by the nut and adapted to fit aroundand engage said extension and pivoted at a single point so as to swingboth laterally and away from the face of the nut.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN E. G. GEISEL. Witnesses:

WM. I. DoLL, H. SEABoLD'r.

